Q: What are the prime factors of the number 778,976?

 A: 2, 11, 2213

Why are those the prime factors of the number 778,976?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 778,976

778,976
Factor Arrows
2389,488
Factor Arrows
2194,744
Factor Arrows
297,372
Factor Arrows
248,686
Factor Arrows
224,343
Factor Arrows
112,213

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 11, 2213

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 2,213 = 778,976

This can also be written as 25 x 111 x 2,2131 = 778,976

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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